Adjustable wick-raiser.



PATENTBD JULY 7; 1903 c. E. WIRTH.

ADJUSTABLE WIGK RAISER.

APPLICATION FILED APR. 27, 1903.

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UNITED STATES Patented July 7, 190a PATENT OFFICE,

PLUME AND ATWOOD MANUFACTURING OF CONNECTICUT.

COMPANY, A CORPORATION I ADJusTAeL'E IWJCK-RAI'SERF.

SPECIFICATION forming part of Letters Patent No. 733,107, dated July 7, 1903.. Application filed April 27, 1903- .Serial No. 154,453. (No model.)

To all whom it may concern;

Be it known that 1, CHARLES E. WIRTH, a-

citizen of the. United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented an Improvement in Adjustable Tick-Raisers, of which the following is a specification.

My present invention relates to a Wick raiser especially adapted for Argand lamps, and the same is an improvement upon the device shown and described in my application for Letters Patent filed February 6, 1903,

Serial N 0. 142,138, withthe object of si1nplify-. ing the structure and at the same time mainl taining the advantageous features thereof, In my present invention the adjustable means for regulating the upward movement of thewick and the means for arresting the movement of the rack and pinion device form part of the rack-and-pinion structure. he screw-rod. for adjusting the height of the wick is the rack actuated by the pinion for raising and lowering the wick, and in the act of adjusting the wick to the right height the said screw-rod is turned in the teeth of the pinion as fixed points. The pinion is not full cutwith teeth, but a segment is left blank, the ends of which in its opposite positions come against the screw-rod and arrest further movement.

Inthe drawingI have illustrated my improvement by a vertical section and partial elevation.

0 represents the wick-tube; a, the wick of circular form and surrounding the central draft-tube c. I

b is an air-distributer, and d the oil-font. In the drawing the oil-font cl is broken open, so as to show the'internal structure, and the section is made through the casing which surrounds the screw-rod and the pinion, and the upper part is broken open, so as to show the wick-tube, the air-distributer, and adjacent parts with the upper part of the font in section.

A band c surrounds the wick a. This band is provided with a prolongation and sleeve e and at opposite sides of the wick with pronged arms e which are hinged to the band and which engage the wick at opposite sides for upon the ledge or shoulder of the fdnt cl and connected thereto by screws 3, which pass into interiorly-threaded sockets of said font,

said font being made with a guide-tube d extending downward into the same and through which the said screw-rod and rack h pass, so

that said screw-rod and rack are guided at two points-the one in the sleeve cl and the other in the upper part of the case f.

On a stem 9, passing through the case f, is a pinion g. with teeth, but is provided with a segment 4, that is blank. Upon the upper end of the screw-rod and rack h there is ahead It, and advantageously around the stem g of the pinion is a friction-spring 5. the rod-h mesh with the teeth of the pinion g. Consequently said pinion may act upon the screw-rod, the same as upon a rack, to raise This pinion is not full cut,

The teeth of and lower the rod, and with it the band 6, the I pronged arms 6 and the wick a. In the position shown in the drawing one end of the segment 4: is in'contact with the teeth of the rod h, so that the pinion cannot be further turned, and the wick is raised to the highest point. A rotary movement in the other direction will carry the Wick down within the wick-tube until the opposite end of the segment i comes against the teeth of the rod, when the movement will be arrested. The rod h is to be rotated by the hand grasping the head 72., in which case the pinion as a fixed point provides for the action of the rod h as a screw in raising and lowering the wick, and it will be apparent that with the parts in the position shown in the drawing the said rod h may be rotated so as to attain the desired height of the wick with reference to the wicktube as said wick may burn and the incrusted portion be removed or cut away. As with other wick-raising devices, when the limit of upward movement of the rack and pinion structure is attained the parts may be adj usted with reference to the wick by loosening the pronged arms e and connecting the same to the wick at a lower point.

In the drawing I have illustrated the usual knurled disk employed on the pinion stem or shaft by the dotted lines 6, and I do not limit myself to the precise construction of the lampfont, the air distributer, or the chimneyholder structure,as these may be modified and the features of my invention may be adapted to a lamp structure of any desired pattern.

I claim as my invention- 1. In a Wick-raiser, the combination with a pinion, of a device acted upon by said pinion as a rack for raising and lowering the wick,

. and which device is capable of independent movement for adjusting and controlling the height of the wick.

2. In a wick-raiser, the combination with a pinion, of a revoluble screw-rod meshing with the teeth of the pinion and movable'longitudinally by the turning of the pinion, and devices connecting said screw rod with the wick whereby with the rotation of said screw-rod the wick may be raised and lowered for adjustment.

3. Inawick-raiser, apinion having an uncut portion or segment-blank,a stem and bearings for said pinion, a device coacting with the pinion and adapted for longitudinal movement by the turning of the pinion to raise and lower the wick and rotatable with reference to the pinion as a fixed point for adjusting the position of the wick, the segment-blank of the pinion forming stops with its movement in opposite directions.

4. In a wick-raiser,a pinion having an uncut portion or segment-blank, a stem and bear ings for said pinion, a screw-rod and bearings therefor, said screwrod meshing with the teeth of the pinion and adapted for movement longitudinally thereof by the turning of the pinion,and against which said segm ent-blank forms a stop for the movements of the pinion in opposite directions, a connection from said screw-rod to the wick for moving the wick with the screw-rod, said screw-rod being capable of a rotary movement with reference to the pinion as a fixed point in adjusting the height of the wick.

5. In awick-raiser, a pinion having an uncut portion or segment-blank,a stem and bearings for said pinion, a screw-rod, a case surrounding a part of the said screwrod, the pinion and its stem, bearings for said screw-rod in said case and in the font of the lamp, said screw-rod meshing with the teeth of the pinion and by the same moved vertically between the limits provided by the segment-blank, a sleeve, a band connectedowith said sleeve and surrounding the wick, and pronged arms connected to said band and engaging the wick, the lower end of said screw-rod being received in the sleeve and fixed thereto while free to rotate, said screw-rod having a head to be grasped and capable of a rotary movement with reference to the pinion as a fixed point for adjusting the position of the wick as periodically consumed.

Signed by me this 20th day of April, 1903.

CHAS. E. IVIRTHI 

